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devel / comp.unix.shell / Re: Is the -t option of gzip widely accepted and portable?

SubjectAuthor
* Is the -t option of gzip widely accepted and portable?hongy...@gmail.com
`* Re: Is the -t option of gzip widely accepted and portable?Ed Morton
 `* Re: Is the -t option of gzip widely accepted and portable?Christian Weisgerber
  +- Re: Is the -t option of gzip widely accepted and portable?hongy...@gmail.com
  `- Re: Is the -t option of gzip widely accepted and portable?Computer Nerd Kev

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Is the -t option of gzip widely accepted and portable?

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Subject: Is the -t option of gzip widely accepted and portable?
From: hongyi.z...@gmail.com (hongy...@gmail.com)
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 by: hongy...@gmail.com - Sat, 8 Jan 2022 13:11 UTC

I'm currently creating a merge request which enhance the archive integrity of the compressed file [1]. But I'm not sure if this trick is widely accepted and portable. Any hints will be highly appreciated.

[1] https://gitlab.com/QEF/q-e/-/issues/435

Regards,
HZ

Re: Is the -t option of gzip widely accepted and portable?

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From: mortons...@gmail.com (Ed Morton)
Newsgroups: comp.unix.shell
Subject: Re: Is the -t option of gzip widely accepted and portable?
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 by: Ed Morton - Sat, 8 Jan 2022 13:40 UTC

On 1/8/2022 7:11 AM, hongy...@gmail.com wrote:
> I'm currently creating a merge request which enhance the archive integrity of the compressed file [1]. But I'm not sure if this trick is widely accepted and portable. Any hints will be highly appreciated.
>
> [1] https://gitlab.com/QEF/q-e/-/issues/435
>
> Regards,
> HZ

Please always put your question in the body of your message, not just in
the subject line.

You're asking if the advertised argument (-t) to a GNU-specific tool
(gzip) is portable. Portable to what? It's not like awk where there's
multiple vendors and so multiple variations of the tool. gzip is
provided by GNU so if they say it has a `-t` argument then it has a `-t`
argument.

Ed.

Re: Is the -t option of gzip widely accepted and portable?

<slrnstjvn0.1m12.naddy@lorvorc.mips.inka.de>

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From: nad...@mips.inka.de (Christian Weisgerber)
Newsgroups: comp.unix.shell
Subject: Re: Is the -t option of gzip widely accepted and portable?
Date: Sat, 8 Jan 2022 21:15:12 -0000 (UTC)
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 by: Christian Weisgerber - Sat, 8 Jan 2022 21:15 UTC

On 2022-01-08, Ed Morton <mortonspam@gmail.com> wrote:

> You're asking if the advertised argument (-t) to a GNU-specific tool
> (gzip) is portable. Portable to what? It's not like awk where there's
> multiple vendors and so multiple variations of the tool.

Actually there are.

OpenBSD has extended BSD compress(1) to cover gzip; both are hardlinks
to the same program.

NetBSD has a re-implementation of GNU gzip, which is also used by
FreeBSD.

They all support -t.

--
Christian "naddy" Weisgerber naddy@mips.inka.de

Re: Is the -t option of gzip widely accepted and portable?

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Subject: Re: Is the -t option of gzip widely accepted and portable?
From: hongyi.z...@gmail.com (hongy...@gmail.com)
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 by: hongy...@gmail.com - Sun, 9 Jan 2022 06:48 UTC

On Sunday, January 9, 2022 at 5:30:11 AM UTC+8, Christian Weisgerber wrote:
> On 2022-01-08, Ed Morton <morto...@gmail.com> wrote:
>
> > You're asking if the advertised argument (-t) to a GNU-specific tool
> > (gzip) is portable. Portable to what? It's not like awk where there's
> > multiple vendors and so multiple variations of the tool.
> Actually there are.
>
> OpenBSD has extended BSD compress(1) to cover gzip; both are hardlinks
> to the same program.
>
> NetBSD has a re-implementation of GNU gzip, which is also used by
> FreeBSD.
>
> They all support -t.

Thank you for your comment. And also see the following options supplied by gzip and uncompress on Debian derived distros:

werner@X10DAi-00:~$ gzip --help |grep -- -t
-t, --test test compressed file integrity
werner@X10DAi-00:~$ uncompress -h|grep -- -t
-t, --test test compressed file integrity

Re: Is the -t option of gzip widely accepted and portable?

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Subject: Re: Is the -t option of gzip widely accepted and portable?
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 by: Computer Nerd Kev - Sun, 9 Jan 2022 20:42 UTC

Christian Weisgerber <naddy@mips.inka.de> wrote:
> On 2022-01-08, Ed Morton <mortonspam@gmail.com> wrote:
>
>> You're asking if the advertised argument (-t) to a GNU-specific tool
>> (gzip) is portable. Portable to what? It's not like awk where there's
>> multiple vendors and so multiple variations of the tool.
>
> Actually there are.
>
> OpenBSD has extended BSD compress(1) to cover gzip; both are hardlinks
> to the same program.
>
> NetBSD has a re-implementation of GNU gzip, which is also used by
> FreeBSD.
>
> They all support -t.

Plus BusyBox, which also supports -t with its gzip implementation
(in v1.33.0 at least).

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